A slurry pump device for a cutter suction dredger

Abstract

The present invention discloses a slurry pump device for a cutter suction dredger, which includes a slurry pump body. The slurry pump body is provided with a mud suction end and a mud discharge end. A mud suction pipe is provided on the mud suction end. The mud suction pipe includes a first mud conveying pipe, a second mud conveying pipe and an anti-blocking mechanism. The anti-blocking mechanism includes an H-shaped pipe, a filtering pipe and a gravel pipe. One end of the first mud conveying pipe is connected to the mud suction end, and the other end of the first mud conveying pipe is connected to an output end of the H-shaped pipe. The two output ends of the H-shaped pipe are respectively connected to one ends of the filtering pipe and the gravel pipe. The other end of the gravel pipe is connected to and penetrates through the surface of the filtering pipe. The other end of the filtering pipe is connected to one end of the second mud conveying pipe. The other end of the second mud conveying pipe is located at the mud adsorption place. A filtering platform is provided on the surface of the filtering pipe. A gravel mechanism is provided in the gravel pipe. The gravel pipe is located below the filtering platform. A pressure reducing mechanism is provided at the connection between the filtering pipe and the H-shaped pipe, which can avoid the blockage of the mud conveying pipe by sand and gravel.

Description

Technical Field

[0001] The present invention relates to a slurry pump device for a cutter suction dredger. Background Art

[0002] A cutter suction dredger uses a rotating cutter to loosen the soil at the bottom of a river or the sea floor, mix it with water to form slurry, suck it into the pump body through a suction pipe, and send it to the discharge area through a discharge pipe. During the construction of a cutter suction dredger, dredging, mud transportation, and discharge are integrated and completed by itself, with relatively high production efficiency.

[0003] Not only soil but also sand and gravel exist at the bottom of the sea or river. Therefore, the cutter suction dredger needs to break the sand and gravel at the bottom of the sea or river first, and then suck out the mixture of the broken soil, sand and gravel, and water by a slurry pump, and then transport it to the location where soil is needed. At this time, if larger sand and gravel are not broken and enter the mud delivery pipe, the larger sand and gravel will block the mud delivery pipe of the slurry pump, resulting in a reduction in the mud suction efficiency of the slurry pump. Summary of the Invention

[0004] The purpose of the present invention is to provide a slurry pump device for a cutter suction dredger, which can avoid the blockage of the mud delivery pipe by sand and gravel.

[0005] The technical solution to achieve the above purpose is: a slurry pump device for a cutter suction dredger, including a slurry pump body, with a suction end and a discharge end provided on the slurry pump body. A suction pipe is provided on the suction end, and the suction pipe includes a first mud delivery pipe, a second mud delivery pipe, and an anti-blocking mechanism. The anti-blocking mechanism includes an H-shaped pipe, a filter pipe, and a gravel pipe. One end of the first mud delivery pipe is connected to the suction end, and the other end of the first mud delivery pipe is connected to one output end of the H-shaped pipe. The other two output ends of the H-shaped pipe are respectively connected to one ends of the filter pipe and the gravel pipe. The other end of the gravel pipe is connected to and penetrates the surface of the filter pipe. The other end of the filter pipe is connected to one end of the second mud delivery pipe, and the other end of the second mud delivery pipe is located at the adsorption place of sediment. A filter table is provided on the surface of the filter pipe, a gravel crushing mechanism is provided in the gravel pipe, the gravel pipe is located below the filter table, and a pressure reducing mechanism is provided at the connection between the filter pipe and the H-shaped pipe.

[0006] Preferably: a fixing groove is provided on the upper surface of the filter table, the fixing groove penetrates the outer surfaces of the filter table and the filter pipe, a filter plate is movably connected in the fixing groove, sealing grooves are provided at the upper and lower end faces of the fixing groove, and two threaded holes are provided on the upper surface of the filter table.

[0007] Preferably, the filter plate comprises a plate body, screws and a filter screen. The plate body is in a T shape. There are through holes on the upper surface of the plate body. Two of the screws are movably connected within the through holes. The surfaces of the two screws are respectively threadedly connected to their respective threaded holes. A filter screen is provided on the surface of the plate body. The filter screen is located within the filter pipe and above the input end of the gravel pipe.

[0008] Preferably, the gravel crushing mechanism comprises a mounting plate, a gravel crushing shaft, gravel crushing knives, a first bevel gear, a motor, a transmission shaft and a second bevel gear. The mounting plate is connected within the gravel pipe. The gravel crushing shaft is movably connected to the mounting plate. The two ends of the gravel crushing shaft are respectively connected to the first bevel gear and the gravel crushing knives. The gravel crushing knives are located above the mounting plate. The motor is connected to the surface of the gravel pipe. One end of the motor is connected to the transmission shaft. The other end of the transmission shaft is connected to the second bevel gear. The second bevel gear meshes with the first bevel gear.

[0009] Preferably, the pressure reducing mechanism comprises a valve body, positioning blocks, a square hole, a rotating shaft, a baffle and a rotating seat. There are two positioning grooves within the filter pipe. Two of the positioning blocks are provided on the surface of the valve body. The two positioning blocks are respectively located within their respective positioning grooves. The square hole is provided within the valve body. The rotating seat is provided within the valve body. The surface of the rotating seat is movably connected to the rotating shaft. The surface of the rotating shaft is connected to the baffle. The baffle is in a square shape. The area of the baffle is larger than the aperture of the square hole. A limiting ring is provided within the h-shaped pipe. The surface of the limiting ring abuts against the surface of the valve body.

[0010] Preferably, sealing gaskets are provided in both of the sealing grooves.

[0011] Preferably, the gravel crushing knives are made of alloy material.

[0012] Preferably, a waterproof bearing is provided at the connection between the gravel crushing shaft and the mounting plate.

[0013] The technical effects of the present invention are as follows:

[0014] 1) When the filter screen becomes blocked, the water flow passing through the filter screen will decrease. At this time, the baffle will drop to block the square hole. However, the suction force output by the mud pump body remains constant. The excess suction force is output from the gravel pipe, thereby sucking down and crushing the debris on the filter screen and then discharging it, thus cleaning the filter screen and preventing blockage.

[0015] 2) When larger gravel passes through the gravel pipe, start the gravel crushing mechanism and start the motor. The motor drives the transmission to rotate. The transmission shaft drives the second bevel gear to rotate. The second bevel gear drives the gravel crushing shaft to rotate. The gravel crushing shaft drives the gravel crushing knives to rotate. When the larger gravel passes through the gravel crushing knives, the larger gravel will be broken into smaller pieces and then discharged by the mud pump body. Brief Description of the Drawings

[0016] Figure 1 is the overall view of the present invention;

[0017] Figure 2 is the internal structure view of the filter tube in the present invention;

[0018] Figure 3 is the sectional view of the overall explosion of the present invention;

[0019] Figure 4 is the exploded view of the h-shaped tube and the filter tube in the present invention;

[0020] Figure 5 is the exploded sectional view of the h-shaped tube and the filter tube in the present invention;

[0021] Figure 6 is Figure 2 the enlarged view at position A in;

[0022] Figure 7 is Figure 3 the enlarged view at position B in;

[0023] Figure 8 is Figure 5 the enlarged view at position C in.

[0024] In the figures: 1, sludge pump body; 101, mud suction end; 102, mud discharge end; 2, h-shaped tube; 201, limit ring; 3, filter tube; 301, positioning groove; 4, filter table; 401, fixing groove; 402, sealing groove; 403, threaded hole; 5, filter plate; 501, plate body; 502, screw; 503, filter net; 6, gravel tube; 7, gravel mechanism; 701, mounting plate; 702, gravel shaft; 703, gravel knife; 704, first bevel gear; 705, motor; 706, transmission shaft; 707, second bevel gear; 8, pressure reducing mechanism; 801, valve body; 802, positioning block; 803, square hole; 804, rotating shaft; 805, baffle; 806, rotating seat. Detailed Embodiment

[0025] Hereinafter, the technical solutions of the present invention will be clearly and completely described in conjunction with the drawings. In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] The present invention will be further described below in conjunction with the accompanying drawings.

[0027] Please refer to Figures 1-8 First Embodiment:

[0028] A slurry pump device for a cutter suction dredger of the present invention includes a slurry pump body 1. The slurry pump body 1 is provided with a mud suction end 101 and a mud discharge end 102. A mud suction pipe is provided on the mud suction end 101. The mud suction pipe includes a first mud conveying pipe, a second mud conveying pipe and an anti-blocking mechanism. The anti-blocking mechanism includes an H-shaped pipe 2, a filter pipe 3 and a gravel pipe 6. One end of the first mud conveying pipe is connected to the mud suction end 101, and the other end of the first mud conveying pipe is connected to an output end of the H-shaped pipe 2. The two output ends of the H-shaped pipe 2 are respectively connected to one end of the filter pipe 3 and the gravel pipe 6. The other end of the gravel pipe 6 is connected to and penetrates the surface of the filter pipe 3. The other end of the filter pipe 3 is connected to one end of the second mud conveying pipe. The other end of the second mud conveying pipe is located at the mud adsorption place. A filter table 4 is provided on the surface of the filter pipe 3. A gravel mechanism 7 is provided in the gravel pipe 6. The gravel pipe 6 is located below the filter table 4. A pressure reducing mechanism 8 is provided at the connection between the filter pipe 3 and the H-shaped pipe 2.

[0029] A fixing groove 401 is provided on the upper surface of the filter table 4. The fixing groove 401 penetrates the outer surfaces of the filter table 4 and the filter pipe 3. A filter plate 5 is movably connected in the fixing groove 401. Sealing grooves 402 are provided at the upper and lower end faces of the fixing groove 401. Sealing gaskets are provided in both sealing grooves 402 for sealing the filter plate 5 to prevent water leakage from causing insufficient suction of the slurry pump body 1. Two threaded holes 403 are provided on the upper surface of the filter table 4 to facilitate fixing the filter plate 5.

[0030] The filter plate 5 includes a plate body 501, screws 502 and a filter net 503. The plate body 501 is in a T shape. Through holes are provided on the upper surface of the plate body 501. Two screws 502 are movably connected in the through holes. The surfaces of the two screws 502 are respectively threadedly connected to the respective threaded holes 403. A filter net 503 is provided on the surface of the plate body 501. The filter net 503 is located inside the filter pipe 3 and above the input end of the gravel pipe 6. Preferably, the filter plate 5 is inclined to the through groove inside the filter pipe 3 to facilitate the impurities on the filter net 503 to enter the gravel pipe 6. The diameter of the gravel pipe 6 is larger than the diameter of the filter pipe 3.

[0031] The gravel crushing mechanism 7 includes a mounting plate 701, a gravel crushing shaft 702, gravel crushing knives 703, a first bevel gear 704, a motor 705, a transmission shaft 706, and a second bevel gear 707. The mounting plate 701 is connected inside the gravel pipe 6. The gravel crushing shaft 702 is movably connected to the mounting plate 701. The two ends of the gravel crushing shaft 702 are respectively connected to the first bevel gear 704 and the gravel crushing knives 703. The gravel crushing knives 703 are located above the mounting plate 701. The surface of the gravel pipe 6 is connected to the motor 705. One end of the motor 705 is connected to the transmission shaft 706. The other end of the transmission shaft 706 is connected to the second bevel gear 707. The second bevel gear 707 meshes with the first bevel gear 704. The gravel crushing knives 703 are made of alloy material and are used to cut larger gravel. A waterproof bearing is provided at the connection between the gravel crushing shaft 702 and the mounting plate 701 to facilitate the rotation of the gravel crushing shaft 702.

[0032] The pressure reducing mechanism 8 includes a valve body 801, positioning blocks 802, a square hole 803, a rotating shaft 804, a baffle 805, and a rotating seat 806. Two positioning grooves 301 are provided inside the filter pipe 3. Two positioning blocks 802 are provided on the surface of the valve body 801, and the two positioning blocks 802 are respectively located in their respective positioning grooves 301. A square hole 803 is provided inside the valve body 801. A rotating seat 806 is provided inside the valve body 801. The surface of the rotating seat 806 is movably connected to the rotating shaft 804. The surface of the rotating shaft 804 is connected to the baffle 805. The baffle 805 is square in shape, and the area of the baffle 805 is larger than the aperture of the square hole 803. A limiting ring 201 is provided inside the h-shaped pipe 2, and the surface of the limiting ring 201 abuts against the surface of the valve body 801 to prevent the pressure reducing mechanism 8 from falling out of the positioning groove 301.

[0033] Second Embodiment:

[0034] A gate valve (not shown in the figure) is provided at the connection between the h-shaped pipe 2 and the gravel pipe 6. When the filter plate 5 is blocked, the gate valve is opened, and the water flow containing gravel enters the h-shaped pipe 2 from the gravel pipe 6 and is then discharged by the sludge pump body 1. During this period, the larger gravel is crushed by the gravel crushing knives 703 and enters the h-shaped pipe 2. At the same time, under the impact of the water flow, the gravel on the filter plate 5 will also enter the gravel pipe 6.

[0035] Embodiment Three:

[0036] Based on Embodiment One and Embodiment Two, a plurality of anti-blocking mechanisms are provided on the sludge suction pipe, and the mesh numbers of the filter meshes 503 on the filter plates 5 of the plurality of anti-blocking mechanisms increase sequentially, so as to achieve a better filtering effect.

[0037] Working Principle:

[0038] Start the mud pump body 1. The water flow containing sand and gravel enters the filter pipe 3 from the second mud conveying pipe. A part of the water flow passes through the filter net 503 into the square hole 803, enters the h-shaped pipe 2 from the square hole 803, then enters the mud suction end 101 of the mud pump body 1 from the h-shaped pipe 2, is sucked in from the mud suction end 101 and then discharged from the mud conveying end 102. When the water flow passes through the square hole 803, it pushes up the baffle 805. The baffle 805 drives the rotating shaft 804 to rotate on the rotating seat 806. At this time, the water flow can pass through normally;

[0039] Another part of the water flow enters the gravel pipe 6 from the filter pipe 3, enters the h-shaped pipe 2 from the gravel pipe 6, then enters the mud suction end 101 of the mud pump body 1 from the h-shaped pipe 2, is sucked in from the mud suction end 101 and then discharged from the mud conveying end 102. When the larger gravel flows through the gravel pipe 6, start the gravel mechanism 7 and start the motor 705. The motor 705 drives the transmission 706 to rotate. The transmission shaft 706 drives the second bevel gear 707 to rotate. The second bevel gear 707 drives the gravel shaft 702 to rotate. The gravel shaft 702 drives the gravel cutter 703 to rotate. When the larger gravel passes through the gravel cutter 703, the larger gravel will be broken into smaller pieces and then discharged by the mud pump body 1;

[0040] When the filter net 503 is blocked, the water flow passing through the filter net 503 will decrease. At this time, the baffle 805 will fall down to block the square hole. However, the suction force output by the mud pump body 1 is constant. The excess suction force is output from the gravel pipe 6, so as to suck down the sundries on the filter net 503, crush them and discharge them, thus cleaning the filter net 503 and avoiding blockage. When the filter net 503 is cleaned, the flow rate of the water flow passing through the filter net 503 is restored, and the baffle 805 is completely pushed up by the water flow passing through the filter net 503 again;

[0041] Second Embodiment:

[0042] Start the mud pump body 1. The water flow containing sand and gravel enters the filter pipe 3 from the second mud delivery pipe. The water flow passes through the filter net 503 and enters the square hole 803, then enters the h-shaped pipe 2 from the square hole 803, and then enters the mud suction end 101 of the mud pump body 1 from the h-shaped pipe 2. After being sucked in from the mud suction end 101, it is discharged from the mud delivery end 102. While passing through the square hole 803, the water flow lifts the baffle 805. The baffle 805 drives the rotating shaft 804 to rotate on the rotating seat 806. At this time, the water flow can pass through normally. When the filter net 503 is blocked, the water flow passing through the filter net 503 will decrease. Start the gate valve. The water flow enters the gravel pipe 6 from the filter pipe 3, enters the h-shaped pipe 2 from the gravel pipe 6, and then enters the mud suction end 101 of the mud pump body 1 from the h-shaped pipe 2. After being sucked in from the mud suction end 101, it is discharged from the mud delivery end 102. When flowing through the gravel pipe 6, start the gravel mechanism 7. The larger gravel will be broken into smaller pieces and then discharged by the mud pump body 1. The sundries on the filter net 503 are sucked down and then crushed by the gravel mechanism 7 and then discharged, so as to clean the filter net 503 and avoid blockage. When the filter net 503 is cleaned, close the gate valve, and the water flow continues to pass through the filter net 503.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A mud pump device for a cutter suction dredger, comprising a mud pump body (1), characterized in that, The dredge pump body (1) is provided with a mud suction end (101) and a mud discharge end (102). A mud suction pipe is provided on the mud suction end (101). The mud suction pipe includes a first mud conveying pipe, a second mud conveying pipe, and an anti-blocking mechanism. The anti-blocking mechanism includes an H-shaped pipe (2), a filter pipe (3), and a gravel pipe (6). One end of the first mud conveying pipe is connected to the mud suction end (101), and the other end of the first mud conveying pipe is connected to an output end of the H-shaped pipe (2). The other two output ends of the H-shaped pipe (2) are respectively connected to one end of the filter pipe (3) and the gravel pipe (6). The other end of the gravel pipe (6) is connected to and penetrates the surface of the filter pipe (3). The other end of the filter pipe (3) is connected to one end of the second mud conveying pipe. The other end of the second mud conveying pipe is located at the mud adsorption site. A filter table (4) is provided on the surface of the filter pipe (3). A gravel crushing mechanism (7) is provided in the gravel pipe (6). The gravel pipe (6) is located below the filter table (4). A pressure reducing mechanism (8) is provided at the connection between the filter pipe (3) and the H-shaped pipe (2); A fixing groove (401) is provided on the upper surface of the filter table (4). The fixing groove (401) penetrates the outer surfaces of the filter table (4) and the filter pipe (3). A filter plate (5) is movably connected in the fixing groove (401). Sealing grooves (402) are provided at the upper and lower end faces of the fixing groove (401). Two threaded holes (403) are provided on the upper surface of the filter table (4); The filter plate (5) includes a plate body (501), screws (502), and a filter net (503). The plate body (501) is in a T shape. Through holes are provided on the upper surface of the plate body (501). Two of the screws (502) are movably connected in the through holes. The surfaces of the two screws (502) are respectively threadedly connected to the respective threaded holes (403). A filter net (503) is provided on the surface of the plate body (501). The filter net (503) is located inside the filter pipe (3). The filter net (503) is located above the input end of the gravel pipe (6); The gravel crushing mechanism (7) includes a mounting plate (701), a gravel crushing shaft (702), gravel crushing knives (703), a first bevel gear (704), a motor (705), a transmission shaft (706), and a second bevel gear (707). The mounting plate (701) is connected inside the gravel pipe (6). The gravel crushing shaft (702) is movably connected to the mounting plate (701). The two ends of the gravel crushing shaft (702) are respectively connected to the first bevel gear (704) and the gravel crushing knives (703). The gravel crushing knives (703) are located above the mounting plate (701). The motor (705) is connected to the surface of the gravel pipe (6). One end of the motor (705) is connected to the transmission shaft (706). The other end of the transmission shaft (706) is connected to the second bevel gear (707). The second bevel gear (707) meshes with the first bevel gear (704); The pressure reducing mechanism (8) includes a valve body (801), a positioning block (802), a square hole (803), a rotating shaft (804), a baffle (805) and a rotating seat (806). Two positioning grooves (301) are provided in the filter tube (3). Two positioning blocks (802) are provided on the surface of the valve body (801), and the two positioning blocks (802) are respectively located in the positioning grooves (301) to which they belong. The square hole (803) is provided in the valve body (801). The rotating seat (806) is provided in the valve body (801). The rotating shaft (804) is movably connected to the surface of the rotating seat (806). The baffle (805) is connected to the surface of the rotating shaft (804). The baffle (805) is square in shape, and the area of the baffle (805) is larger than the aperture of the square hole (803). A limiting ring (201) is provided in the h-shaped tube (2), and the surface of the limiting ring (201) abuts against the surface of the valve body (801).

2. The sludge pump device for a cutter suction dredger according to claim 1, characterized in that: Sealing gaskets are provided in both of the two sealing grooves (402).

3. The mud pump device for a cutter suction dredger according to claim 1, characterized in that: The gravel cutter (703) is made of alloy material.

4. A slurry pump device for a cutter suction dredger according to claim 1, characterized in that: A waterproof bearing is provided at the connection between the gravel shaft (702) and the mounting plate (701).

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